Overview:

The California Department of Transportation (Caltrans) is conducting the Surfers Beach Sea Level Rise Adaptation Feasibility Study to identify both short- and long-term strategies for addressing recurring coastal erosion and flooding along State Route 1 (SR 1) near Surfers Beach. These challenges are being intensified by the effects of climate change, including rising sea levels.

The feasibility study aims to improve coastal resilience in the area by evaluating potential responses to projected sea level rise. As part of this effort, Caltrans will collaborate with local partners to align with existing and ongoing projects and plans.

Caltrans will consider three primary alternatives to be evaluated:

Protect: Maintain the roadway in its current location using a range of strategies, from traditional “grey” infrastructure to nature-based “green” solutions.

Accommodate: Modify the roadway to reduce vulnerability to coastal hazards, acknowledging that some impacts may still occur.

Retreat: Relocate the roadway further inland, away from direct impacts to the coastline.

 

Project Site Map:

Map of Surfers Beach project site located between post mile 31.9 - 32.3 near El Granada, California. 

 

 

Local Agency Stakeholders

As part of the feasibility study, Caltrans is working closely with local agencies to gather feedback on potential strategies at Surfers Beach. 

  • San Mateo County Harbor District
  • US Army Corps
  • California Coastal Commission
  • City of Half Moon Bay
  • OneShoreline
  • Granada Community Services District (GCSD)
  • San Mateo County Planning
  • San Mateo County Transportation Authority
  • Midcoast Community Council


 

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complete

Adaptation Concept Report- Fall 2025

Completed in November 2025 in coordination with the California Coastal Commission. This report was meant to identify issues facing Surfers Beach due to the long-term retreat. 

 

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live

Feasibility Study- 2026

This study will identify potential projects for this location that could address impacts from SLR. It will seek a phased adaptation strategy. 

Caltrans makes every attempt to ensure our documents are accessible. Due to variances between assistive technologies, there may be portions of documents which are not accessible. Where documents cannot be made accessible, we are committed to providing alternative access to the content. Should you need additional assistance, please contact us at (916) 654-2852 or visit https://dot.ca.gov/request-ada-compliant-documents.